Delcath Systems, Inc. Announces Inclusion of CHEMOSAT Hepatic Delivery System for Melphalan as a Recommended Liver-Directed Regional Therapy Option in the ESMO–EURACAN Clinical Practice Guidelines for Uveal Melanoma

QUEENSBURY, N.Y.--(BUSINESS WIRE)-- Delcath Systems, Inc. (Nasdaq: DCTH), an interventional oncology company focused on liver-directed cancer therapies, today announced that its proprietary CHEMOSAT® Hepatic Delivery System for Melphalan percutaneous hepatic perfusion (M-PHP) has been included as a recommended liver-directed regional therapy option in the newly published Uveal Melanoma: ESMO–EURACAN Clinical Practice Guideline for diagnosis, treatment and follow-up (April 2026).

M-PHP is also recognized in the National Comprehensive Cancer Network (NCCN) Clinical Practice Guidelines in Oncology for Metastatic Uveal Melanoma. HEPZATO KIT™ (also referred to as melphalan/HDS), is included as a Category 2A recommended treatment option for appropriate patients with hepatic-dominant metastatic uveal melanoma (mUM). M-PHP has been listed as a liver-directed therapy option in NCCN guidelines for several years, predating the 2023 FDA approval of HEPZATO KIT.

The ESMO-EURACAN guideline recognizes M-PHP under regional treatments for patients with liver-dominant mUM. Two Phase 3 trials of M-PHP (NCT02678572 and NCT00324727) are cited as key supporting data, demonstrating improved hepatic and overall progression-free survival, and overall response rates compared with best alternative care. The guideline also assigns an ESMO-Magnitude of Clinical Benefit Scale score of 3 to M-PHP in the supplementary materials, for patients with unresectable hepatic metastases affecting